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LOINC Code 94735-8: Prostate tumor area with Gleason pattern 4+5/Total tumor area Microscopy (Prostate tumor) [Area fraction]

94735-8 is a LOINC code used to identify Prostate tumor area with Gleason pattern 4+5/Total tumor area Microscopy (Prostate tumor) [Area fraction] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Prostate tumor area with Gleason pattern 4+5/Total tumor area. It is commonly used with the system or sample type Prostate tumor.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Prostate tumor area with Gleason pattern 4+5/Total tumor area. It is commonly used with the system or sample type Prostate tumor.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Observation
  • Method: Microscopy

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

Prostate tumor area with Gleason pattern 4+5/Total tumor area [Area Fraction] in Prostate tumor by Microscopy
Prostate tumor area with Gleason pattern 4+5/Total tumor area
The percentage of prostate tumor that is high grade (the combined percentage of Gleason grade of 4 or 5 within the tumor) has been suggested to be the best predictor of cancer progression after radical prostatectomy [PMID15860849].
Cancer; Genitourinary; Gleason 4+5; Gleason 4+5/Total; GU; Micro; Micros; Microscopic; Oncology; PATHOLOGY; Point in time; Prost; Prostatic; PrT; QNT; Quan; Quant; Quantitative; Random; Tot; Totl; tumors; tumour; tumours; URO; Urology

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Prostate tumor area with Gleason pattern 4+5/Total tumor area Microscopy (Prostate tumor) [Area fraction]Prostate tumor area with Gleason pattern 4+5/Total tumor area [Area Fraction] in Prostate tumor by MicroscopyGleason 4+5/Total AreaFr PrT MicroProstate tumor area with Gleason pattern 4+5/Total tumor areaPATHProstate tumor area with gleason pattern 4+5/Total tumor area, Prostate TumorAreaFr

Frequently asked questions

Code details

Code94735-8
SystemLOINC
Display nameProstate tumor area with Gleason pattern 4+5/Total tumor area Microscopy (Prostate tumor) [Area fraction]
DescriptionProstate tumor area with Gleason pattern 4+5/Total tumor area
Short nameGleason 4+5/Total AreaFr PrT Micro
ComponentProstate tumor area with Gleason pattern 4+5/Total tumor area
PropertyAreaFr
TimingPt
System (specimen)Prostate tumor
ScaleQn
MethodMicroscopy
ClassPATH
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.68
Last changed2.68

Consumer names

Prostate tumor area with gleason pattern 4+5/Total tumor area, Prostate Tumor

Part names

Prostate tumor area with Gleason pattern 4+5/Total tumor areaAreaFrPtProstate tumorQnMicroscopyArea FractionPoint in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.